Finding the Fourth Proportional to 171.11, 236.11 and 122.21
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Solution
The fourth proportional to 171.11, 236.11 and 122.21 is: 168.63
Step by Step Solution
- Step 1: Write the proportion equation
171.11 : 236.11 = 122.21 : x - Step 2: Convert to fraction form
171.11/236.11 = 122.21/x - Step 3: Cross multiply
171.11x = 236.11 × 122.21 - Step 4: Simplify right side
171.11x = 28,855.00 - Step 5: Solve for x
x = 28,855.00/171.11 - Step 6: Final answer
x = 168.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.